Grain cleaning and separating machine



4 Sheets-Sme?I l H. L. JOHNSON GRAIN CLEANING AND SEPARATING MACHINEFiled July 22,` 1929 m M T0 R o n O O ML v E Y N l m m s Al C, f Il D le IL Y lflv i 1 1S 1 ..05 om, B vb Nh, n* N\ h\ mb m *www mb QN N nu. nh l I n Mm lwm f M ww .M MO. l.m. ,T f I :MK 1 H om mm hm Nw l! "w ww.TI m r l @i 1r I v 11| Il' a IUN .[.M Il Il L .w a. f w H NN S Q W m lJune 6, 1933.

ATTORNEY June 6, 1933. H 1 JOHNSON 1,912,375

GRAIN CLEANING AND SEPARATING MACHINE Filed July 22, 1929 4 sheets-sheet2 rNvENToR HARRY L. Jmwvso/v www( ATTORNEY June 6, 1933. H. L. JOHNSONGRAIN CLEANING AND SEPARATING MACHINE Filed July 22, 1929 4 Sheets-Sheet3 lNvENTo-R Y//M/ev L JOHNSON B ATTORN EY June 6, 1933. H, L. JOHNSONGRAIN CLEANING AND SEPARATING MACHINE Filed July 22, 1929 4 Sheets-Sheet4 INVENTOR HAR/PY L J/m/so/v BY ,4?

Jl/1:1 da@ A'I'I'ORNEY Patented June 6, 1933 UNITED STATES PATENT FFECEHARRY L. JOHNSON, OF ST. PAUL, MINNESOTA GRAIN CLEANING AND Applicationfiled July 22,

particles into its constituent elements, andy particularly forseparating out wheat from a mass containing seed or other particles thatare larger or smaller than the wheat grains. A further object is to soconstruct the machine that it is compact, to thereby conserve space, iscomparatively simple, tov reduce t-he manufacturing cost, but which isalso sturdy in construction and is so designed that it is capable ofhandling or separating a large volume of grain in a relatively shortspace of time. Further and more specific objects will be disclosed inthe course of the following specification, reference being had to theaccompanying drawings, wherein:

Fig. 1 is a longitudinal sectional elevation taken centrally through themachine, substantially as on the line 1-1 in Fig. 3. Y

Fig. 2 is an end view of the machine as seen from the left in Fig. 1.

Fig. 3 is an .end View of the machine as seen from the right in Fig. 1,with fractional portions broken away for purpose of illustration.

Fig. 4i is a sectional elevation on the line 4-4 in Fig. 1.

Fig. 5 is a sectional elevation on the line 5 5 in Fig. 1. x

Fig. 6 is a sectional elevation on the line 6 6 in Fig. 1.

Fig. 7 is a sectional elevation on the line 7-7 in Fig. 1.`

Referring to the drawings more particularly and by reference characters,8 designates an arched housing for the machine, and is closed by a pairof end walls 9 and 10, which are riveted or otherwise suitably securedto the housing proper. A power shaft 11 is journaled in suitablebearings 12 and 13, secured to the end walls 9 and 10, and is driven bya pulley 14 which is connected by a belt SEPARATING MACHINE 1929. SerialNo. 380,077.

( not shown) to any suitable power unit. The shaft 11 carries sprocketgears 15, 16, and 17, all of which drive various parts of the machine,as will presently be described. The end wall 9 carries a ring-shapedbearing member 18 in which is secured a casting 19, and which castinghas a tubular central portion 20 through which the unseparated grainpasses from a hopper 21. A shaft 22 extends centrally through themachine, and is carried by bearing boxes 23 and 24 which are disposed atopposite ends of the machine.

Formed integrally with the shaft 22 is a long feed screw 25 and a shortfeed screw 26, the latter of which operates in a tubular end lportion 27of a trough 28. The opposite end of this trough has a similar tubularportion 29 which terminates in a chute 80, through which the finest ofthe separated particles are discharged. y

The worm shaft 22 has a sprocket pinion 31 that is driven from thesprocket pinion 17 by a sprocket chain 32. The `tubular portions -27 and29 of the trough 28 are carried by the casting 19 at one end, and in asuitable housing bracket at the other end. This trough, as shown in Fig.5, has an inclined wall 34, the upper end of which has a iange 35operative immediately within the inner surface of the cleaning drum B,which drum in turn operates within a larger and primary separating drumA.

The trough 28 is provided with end plates 3G, and opposite the wall 34is provided with a shaft 37 which carries a shelf plate 38, having endwalls 39 which close against the end walls 36. The shaft 37, as shown inFig. 2, extends outside of the end wall 9, and is there provided with anadjusting lever 40 having a segmental slot 41, through which a set screw42 operates to secure the Vlever in any adjusted position. By adjustingthe lever 40 it will be seen that the shelf plate 38 will be raised Vandlowered within the drum B, for a purpose later to be described.

As shown in Fig. 1, theI members 19 and 27 are provided with a slot 43through which the uncleaned grain drops as it is delivered from thehopper 21, by the short feed screw 5 26. As the stream of material dropsdown through the opening 43 it is received by one end of the large drumA. This drum A consists of a sheet metal cylinder having profuselydistributed indents or pockets 44, that l0 extend over substantially theentire area of the drum. The drum or cylinder A is provided with a sheetmetal end wall 45, that is carried by a bearing ring 46 that rotatesabout the casting 19, and carries a sprocket gear 47 that is driven fromthe pinion 15 by a sprocket chain 48. At its other end the drum orcylinder A is provided with a large bearing ring 49, which rests on apair of spaced rollers 50, and these rollers constitute the. onlysupport for this end of the cylinder. The bearing ring 49 also serves toreinforce this end of the cylinder, and as a third function serves as astop to prevent a too rapid discharge of grain from the cylinder as thegrain flows from the right end of the machine C3 to the left, as seen inFig. 1.

It may here he noted that as the cylinder A rotates the large particlesof grain or other matter that are not carried up and otherwise deliveredfrom it, will pass over the bearing C@ ring 49 and drop down through aspout 51.

The drums A and B are eccentric with respect to each other, as shownparticularly in Fig. 5, so as to afford a maximum grain capacity tocylinder A, and they are separat- C ed with respect to each other by acylindrical guard or trough 52, the upper end of which is open toreceive the grain that is picked up by the indents in the cylinder A,

and dropped, as indicated by the arrows 53 in C3 Fig. 5. Secured uponthe outer surface of the drum B is a spiral worin or feed screw 54,which operates in the member 52 as the cylinder B rotates, tocontinually move the grain in the trough 52 towards the right end 1J. ofthe machine, as shown in Fig. 1. As the grain is crowded by the feedscrew 54 into the right end of the trough 52, it is picked up by aseries of paddles or catch plates 55, each of which is angularlydisposed with respect lto 'the radius of operation, whereby it will pickup the grain and deliver it into the drum or cylinder B, throughopenings 56 in the end wall of this drum.

The cylinder B is supported at one end by l la ring 57 that bears upon aflange 58 of the casting 19, and at its other end this cylinder isprovided with a ring 59 which has bearing engagement With an angle ironring member 60 60 secured to the end wall 10. The bearing 'member 59carries a sprocket gear 61 that is driven from the sprocket pinion 16 onthe shaft 11 by a sprocket chain 62. The cleaning cylinder B is providedwith indents or small pockets 63 that function in the same manner as theindents 44, but are consider ably smaller in size. If the machine is tobe used for cleaning wheat, the indents 44 are preferably of a size tocarry the wheat and small kernels and particles upwardly, and drop theminto the trough 52, all larger particles, such as oats and other foreignmatter, being' delivered out through the spout 51. As the wheat andsmaller particles are delivered into the interior of the drum B, thepockets or indent-s 63 are too small to engage the wheat kernels, but doreceive all the smaller particles and carry them up so that they willdrop into the trough 28. All these smaller particles are then carriedoff by the feed screw 25, fromv which they are delivered through thespout 30. rthe wheat kernels, on he other hand, have now been completelyseparated from all grain, seed, or other particles that are eitherlarger or smaller than the Wheat kernels, and as the cleaned wheat nowprogresses to the left end of the cylinder B, as seen in Fig. 1, it ispicked up by a series of angularly formed spoons or catch plates thatare secured in the end of the cylinder and, like the members 55, aredisposed at an angle to the operating radius of the cylinder.

is shown in Fig. 6, the inner ends of the members 64 operate against asector or curved guard plate 65, as they move upwardly. In this mannerthe feed paddles 64 each engages a considerable volume of grain, and theguard plate 65 serves to retain it upon the paddle until it reaches theuppermost position, at which time the grain is dropped down into adelivery spout 66, first passing through the opening 67 in the end wall9. The object of angling the m-embers 64 with respect to the operatingradius is to insure the proper delivery of the grain into the opening67, and to prevent it being carried past the same by centrifuga-l force.

In order that the grain and other particles delivered by the indents 44of the cylinder A to the trough 52 may be regulated as to size, thetrough is mounted for oscillating adjustment, and with this purpose inmind I have provided one end of it with an endwall 68 that has anoscillating bearing engagement with the casting 19, while the oppositeend is carried in a segmental strap G9 that is secured to the end wall1() by brackets 70. The trough 52 is then provided with a spring latch71 (see Figs. 2 and 7) that projects out through the housing end wall 10and releasably engages the notches 72 in a sector 73 secured to this endwall. Bv releasing the spring latch 71 and moving it to one of the othernotches 72 it will be seen that the trough 52 may be oscillatablyadjusted and resecured in any desired position, and that such adjustmentwill raise or lower the grain receiving edge 74 of the trough.

r-eceiving material at one end and discliarging a part thereof from theother end, a trough disposed Within the cylinder for receiving theundischarged grain elevated thereby, a second poclreted cylinderoperating in the trough and for receiving grain therefrom, and a secondtrough disposed Within the second cylinder for receiving relativelysmall particles therefrom.

7. A giain separating machine comprising a primary pocketed separatingcylinder for receiving material at one end and discharging a partthereof from vthe other end, a trough disposed Within the c ylinder forreceiving the undischarged grain elevated thereby, a second pocketedseparating cylinder operating in the trough and for receiving graintherefrom, and means for adjusting the position of the trough. Y

8. A grain separating machine comprising a primary pcclieted separatingcylinder for receiving material at one end and discliarging a partthereof from the other end, a trough disposed within the cylinder forreceiving the undischarged grain elevated thereby, a second poclretedseparating cylinder operating in the trough and at one end for receivinggrain therefrom, and means carried by the second cylinder for agitatingthe grain in the trough toward said receiving means.

9. A grain separatinginachine comprising a primary poclreted separatingcylinder for receiving material at one end and discharging a partthereof from the other end, a trough disposed Within the cylinder forreceiving the undischarged grain elevated thereby, a second pocketedseparating cylinder operating in the trough and for receiv# ing graintherefrom, and a second trough disposed Within the second cylinder forreceiving relatively small particles elevated thereby, said secondcylinder having a peripheral feed screw operating in the first mentionedtrough.

l0. A grain separating machine comprising a primary poclreted separatingcylinder for receiving material at one end and discharging a partthereof from the other end, a trough disposed Within the cylinder forreceiving the undischarged grain elevated thereby, a second pocketedseparating cylinder operating in the trough and for receiving graintherefrom, and a second trough disposed Within the second cylinder forreceiving relatively small particles elevated thereby, said secondcylinder having a peripheral feed screw operating in the first mentionedtrough, and a second feed screw, disposed in the said second trough, fordischarging material therefrom.

l1. A grain separating machine comprising a pair of rotatable separatingcylinders disposed one Within the other, and With the inner surface ofeach of said cylinders provided with profusely distributed indents,means for delivering unseparated grain to one end of the outer cylindermeans for discharging relatively large particles from the other end ofsaid cylinder, means for conveying grain, separated from said relativelylarge particles and elevated by the outer cylinder, to the innercylinder, means for discharging tlie cleaned grain from -the innercylinder, and means for receving relatively small particles from theinner cylinder and discharging them from the machine.

l2. A grain separating machine comprising an outer pocketed separatingcylinder for initially acting upon the grain, an arcuate trough disposedWithin the cylinder toreceive material therefrom, an inner pocketedsepating cylinder rotatable in the trough and having peripherallydisposed means for advancing the material in the trough toward one endthereof as the inner cylinder rotates, said inner cylinder havingelevating means including openings at one end to receive the materialadvanced in the trough by said peripherally disposed means.

13. A grain separating machine comprising an outer pocketed separatingcylinder for initially acting upon the grain, and discharging a partthereof from one end of the cylinder an a cuate trough disposed Withinthe cylinder to receive the undischarged part of material therefrom, aninner pocleted separating cylinder rotatable in the trough, and havingperipherally disposed means for advancing the material in the troughtoward one end thereof as the inner cylinder rotates, and means at theend of the inner cylinder ad- `jacent the trough end to which the grainis advanced to eect a delivery of such grain into the inner cylinder.

14.. Al grain separating machine comprising an outer cylinder forinitially acting upon the grain, and discharging a part thereof from oneend of the cylinder an arcuate trough disposed Within the cylinder toreceive the undischarged part of material therefrom, an inner cylinderrotatable in the trough and having peripherally disposed means foradvancing the material in the trough toward one end thereof as the innercylinder rotates, and means carried by the inner cylinder and operativeby rotation of the latter, to engage the grain advanced in the troughmember and direct it into the interior of the inner cylinder forsecondary treatment, said cylinders being provided with means on theinterior surfaces thereof to eect a separating action on the graintherein as the cylinders rotate.

15. Ina grain treating machine the conibination of a receptacle forgrain, means for advancing grain in the receptacle to one end thereof, agrain treating cylinder rotatable With respect to and having one enddisposed adjacent to the receptacle end to Which the The operation anduse of the device may be briefly described as follows:

Y lith power applied to the pulley 14 it and the cylinders and feedscrews operate in the directions indicated by the arrows in the variousfigures. As the uncleancd and unseparated grain is fed into the hopper2l it is moved by the feed screw section 26 inwardly, until it dropsdown through the opening 43 and into the adjacent end of the cylinder A.The incoming column of grain and the agitation caused by the rotation ofthe cylinder effects a movement of the grain toward the ring 49 at theopposite end of the cylinder. As the grain body moves lengthwise of thecylinder it drops into the indents 44 which tend to carry it upwardlytoward the trough edge 7 4. As the cylinder wall approaches the verticalthe particles that are too large to be received by the indents will fallback, but the wheat (if the machine is a wheat cleaner) and all smallerseed and particles will remain in the indents until forced out vbygravity. rPhe maximum size of the wheat and other particles deliveredinto the trough 52 will of course primarily depend upon the size and'conformation of the indents 44, but, within certain limits, the size ofparticles delivered over the edge 74 will also depend upon the speed ofthe cylinder and the relative height of the edge '74, both factions ofwhich are subject to adjustment in order that the desired results may behad. As previously noted, all the oversize particles or grain, such assticks, oats, and other foreign matter, will be discharged out throughthe spout 5l, but to prevent the accidental discharge of any wheat it isdesirable to thoroughly subject the entire mass of material to theaction of the indents, and to this end the ring 49 acts as a retarder,and the larger material can only escape over the inner periphery of thisrinff.

The larger materials having been separated out the grain and smallerparticles now drop down in the trough' 52, but outside of the cylinderB, and in so doing is subjected to the action of the feed worm 54 whichimpels it toward the paddles or scoops 55 which pick it up and drop itinto one end of the cylinder B. Thegrain then moves toward the oppositeend of the cylinder under a like influence to that described inconnection with the movement through the outer cylinder. The pockets orindents 63 now operate Ato pick up vthe dust, dirt, seed and evenundesirably small grains of wheat, and delivers such material over theshelf plate 38 so that it will be received in the trough 28. The troughproper is stationary, but by adjusting the position of the shelf plate,by the lever 40, the size of the small particles separated out from thewheat may be controlled. The cleaned and separated wheat is now pickedup by the paddles 64 and carried up against Vthe guard segment 65 to bedelivered from the machine out through the port 67, and chute 66.Meanwhile the undesirably small material is fed outwardly by the feedscrew 25 until it is discharged from the machine out through the spout30.

It is understood that suitable modifications may be made in thestructure as disclosed, provided such modifications come within thespirit and scopel of the appended claims. Having now therefore fullyillustrated and described my invention what I claim to be new and desireto protect my Letters Patent is:

l. A grain separating machine comprising a primary poclreted separatingcylinder adapted to receive material in one end and discharge a partthereof at the other end, a secondary pocleted separating cylinder forseparating a relatively lesser volume of material than that of theprimary cylinder disposed within the primary cylinder, and means forconveying the undischarged material elevated by the primary cylinder tothe interior of the secondary cylinder.

2. A grain separating machine comprising a pair of rotatable pocketedseparating cylinders disposed one within the other and having enddischarge openings, a trough arranged between the cylinders to catchmaterial elevated by the outer cylinder except that which may have beendischarged through such end openings, and means for conveying thematerial in the trough to the inner cylinder.

3. A grain separating machine comprising a pair of rotatable pocketedseparating cylinders disposed one within the other, means for receivinga part of the material separated by the outer cylinder and delivering itto the inner cylinder, and a trough arranged to receive materialelevated by the inner cylinder, said trough being provided with anadjustable grain receiving shelf.

4. A grain separating machine comprising inner and outer pocketedseparating cylinders, a trough having an arcuate portion concentric withthe inner cylinder disposed between the cylinders to receive grainseparated from a mass of material in the outer cylinder, means fortransferring the grain from the trough to the inner cylinder, and meansfor adjustably oscillating the trough to regulate the size of grainparticles received.

5. A grain separating machine comprising a primary pocketed separatingcylinder for receiving material at one end and for discharging a partthereof from the other end,

a trough disposed within the cylinder to receive the undischarge'd partof the grain elevated thereby, a second pocketed cylinder operating inthe trough and arranged to receive grain therefrom.

6. A grain separating machine comprising a primary pocketed separatingcylinder for grain is advanced, and a series of circumferentially spacedplate members at said end of the cylinder for engaging tlie grainadvanced in the receptacle and directing it into the cylinder fortreatment, said cylinders being provided With means on the interiorsurfaces thereof to eect a separating action on the grain therein as thecylinders rotate. n

Signed at Minneapolis, in the county of Hennepin, and State ofMinnesota, this l2 day of July 1929.

HARRY L. JOHNSON.

